A bit of context when it comes to a league. Myself and my 2 boys are season ticket holders for macarthur fc, who have just joined the league. Whilst football at grassroots is the most popular sport for kids, it doesn't translate into a league attendance or viewership for 3 main reasons:
1. Professional sport in Oz is dominated by league, AFL, cricket and rugby. They have always dominated crowds and viewing numbers and will continue to do so, partly because these sports are so ingrained into our Aussie culture, but also partly due to my 2nd point.
2. Marketing. A league does next to no marketing, it gets minimal coverage in mainstream media and is on the outer with their TV provider who do very little to promote the game. Hopefully the a league is working on this
3. Ticket prices. Many teams, including macarthur, price themselves out of the market and its often unaffordable for the average family.
IMO, a league is going through some fantastic change at the moment, most notably with the influx of Aussie youth coming into the teams due to covid impacts. The league is exciting, full of young talent and if they can get points 2 and 3 sorted, the fans will flock back imo